Rolling cubes stick on their vertices when stopping

[gsimard]

Hello,

Upfront I need to say I'm using a modified version of jBullet (which is itself based on Bullet 2.72) with double precision enabled. I've basically done a search and replace on every float -> double, Vector3f->Vector3d and etc. I've grepped through the native source code of Bullet to make sure any compiler flag for switching from single precision to double precision was also reflected in jBullet since the constants differ in some numerical algorithms.

I'm having this problem: unit length cubes (BoxShape) rolling on a large SphereShape (radius = 100f) stop rolling by clearly sticking on their vertices most of the time, when I'd expect them to land flat on one of their faces.

Also, if that's any help to a troubleshooter out there, the cubes are "dancing" in a way that suggests they'd really like to get rolling a little more but can't for some reason (friction or something ?).

Does that ring a bell to anyone ? What are my degrees of freedom to adjust that could resolve this problem ?

Regards,